PREFACE 



This report is 60th in a series of annual reports on the International Ice 

 Patrol Service in the North Atlantic Ocean. It contains information on Ice 

 Patrol organization, communications and operations, on ice and environ- 

 mental conditions and their relationship in 1974, on oceanographic conditions, 

 Ice Patrol research and development, and evaluation of the Airborne Radia- 

 tion Thermometer and Earth Resources Technology Satellite. 



The authors of this report, Commander Albert D. SUPER, USCG and 

 Lieutenant Douglas W. CROWELL, USCG acknowledge ice and weather 

 data provided by the Canadian Department of the Environment, weather and 

 oceanographic data provided by the U.S. Naval Weather Service, and oceano- 

 graphic data provided by the U.S. Coast Guard Oceanographic Unit. 

 Acknowledgement is also made to Yeoman Third Class Terry L. GEST, 

 USCG, Marine Science Technican First Class Neil O. TIBAYAN, USCG, 

 Marine Science Technician Second Class Raymond J. EVERS, USCG, 

 Marine' Science Technician Second Class Raymond M. LARKIN, USCG, 

 Marine Science Technician Second Class Robert N. HILDEBRAND, USCG, 

 Marine Science Technician Third Class Paul A. LeBRUN, USCG, Marine 

 Science Technician Third Class James M. GAYNOR, USCG, and Marine 

 Science Technician Third Class Robert E. BLOHME, USCG, for illustra- 

 tions for this report. A special acknowledgement is made to Lieutenant 

 Junior Grade Stephen R. OSMER, USCG, who is responsible for most of the 

 appendices to this report. 



in 



